modulate.m

此工程为为一个完整的bpsk

% 进行BPSK调制，输入信号为signal_in,输出信号为signal_out,
% 调制原理：将1的位对应变成-1，把0的位对应变成1

function [ signal_out ] = modulate( signal_in )

signal_length = length(signal_in);
signal_out = ones(1,signal_length);

signal_out(find(signal_in == 1)) = -1;